| Manufacturer | Mercury Rise |
| Type | Breech-Loading PCP Derringer |
| Caliber | .43 cal / .50 cal (dual caliber) |
| Power Source | PCP air cartridges (2 per charge) |
| Barrel Diameter | Unknown |
| Muzzle Velocity | ~380–385 FPS |
| Effective Range | ~7 m (23 ft) |
| Capacity | 2 rounds (breech-loading) |
| Fire Mode | Single-action, one shot per trigger pull |
| Projectiles | Spherical, hemispherical, torpedoes, darts, arrows, pepper spray cartridges |
| Construction | High-impact glass-reinforced trigger frame |
| Weight | 4.4 oz |
| Dimensions | 5.0″ (L) × 3.75″ (H) × 0.75″ (W) |
| Price Range | ~$120 (on sale from ~$170 MSRP) |
Design & Build Quality
The PepperRay Derringer is built around radical minimalism. At 4.4 oz and just 5 inches long, it is smaller and lighter than virtually any other less-lethal launcher in this guide — closer in size to a deck of cards than a pistol. The high-impact glass-reinforced trigger frame is the primary structural component, keeping the unit extremely light while maintaining enough rigidity for functional use. The overall form factor is a direct callback to the classic two-shot derringer: two barrels, two shots, minimal everything else.
PCP air cartridges replace the traditional CO₂ or spring mechanism entirely. Each cartridge is self-contained and pre-pressurized, inserted directly into the breech. The dual-caliber design (.43 and .50 cal compatible) gives the platform unusual versatility for its size.
Performance & Ballistics
The Derringer achieves ~380–385 FPS with standard spherical projectiles — respectable velocity for a PCP platform of this size. The 7-meter effective range is honest: this is a contact-distance to short-range tool, not a standoff device. At that range, impact energy is sufficient for deterrence and pain compliance, especially when pepper spray cartridges are loaded to add a chemical irritant component.
Two shots per PCP charge is the fundamental operational constraint. The included PCP fill adapter and spare cartridges allow reloading, but users need to practice the sequence under stress. Once both shots are expended, inserting fresh PCP cartridges is more involved than swapping a magazine.
Handling, Controls & Ergonomics
The Derringer is designed for deep concealment and last-resort deployment. The grip is minimal by necessity — at 0.75 inches wide, it fits most hands but offers less purchase than a full-framed pistol. The single-action trigger requires deliberate operation, which is appropriate for a concealed carry tool where accidental discharge is a real concern.
Its 4.4 oz weight means it can be carried in a pocket, bag, or ankle holster without noticeable burden. The breech-loading design requires two hands and some dexterity to reload, so the Derringer is best thought of as a two-shot tool that ends the encounter — not a platform for extended exchanges.
Ammunition Compatibility
The PepperRay Derringer accepts both .43 cal and .50 cal projectiles and has an unusually broad projectile compatibility range for its class.
- Spherical balls (.43/.50 cal) — standard kinetic impact rounds
- Hemispherical projectiles — alternative impact profile
- Torpedoes — elongated projectiles for improved ballistic stability
- Steel tip darts — penetrating option (check local regulations)
- Arrow projectiles — low-velocity arrow-type rounds
- Pepper spray cartridges — chemical irritant payload; the primary less-lethal use case
Known Issues & Limitations
- 2-round capacity is the hardest constraint — each engagement is limited to two shots before a more involved reload
- 7-meter effective range restricts use to close-quarters scenarios only
- PCP cartridge reload is slower than magazine-fed alternatives under stress
- Limited documentation — Mercury Rise provides minimal technical support resources
- Niche product with limited aftermarket support and community knowledge base
Accessories & Upgrade Ecosystem
- Mercury Rise PCP air cartridges (proprietary — required for operation)
- Mercury Rise PCP fill adapter (included in bundle)
- PCP air cartridge disassembly tools (included in bundle)
- .43/.50 cal rubber balls and pepper spray cartridges
- Pocket or ankle holsters sized for compact derringer-format pistols
Platform Summary
The PepperRay Derringer occupies a unique niche: it is the most concealable less-lethal launcher in this guide, trading capacity and range for an almost undetectable carry profile. Two shots, 7 meters, 4.4 oz — those numbers define both its strengths and its limits. For buyers who need an ultra-discreet less-lethal option that can be carried where larger launchers cannot, or who want a minimal backup device, the Derringer is genuinely distinctive. Anyone expecting it to perform like a full-size pistol will be disappointed; approached as a close-range, two-shot deterrent tool, it delivers exactly what it promises.
Where to Buy
Official Manual
Video Resources
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